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generic: rtl8366_smi: init VLANs only in first switch initialization
[openwrt/svn-archive/archive.git] / target / linux / generic / files / drivers / net / phy / rtl8366_smi.c
1 /*
2 * Realtek RTL8366 SMI interface driver
3 *
4 * Copyright (C) 2009-2010 Gabor Juhos <juhosg@openwrt.org>
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 as published
8 * by the Free Software Foundation.
9 */
10
11 #include <linux/kernel.h>
12 #include <linux/module.h>
13 #include <linux/device.h>
14 #include <linux/delay.h>
15 #include <linux/gpio.h>
16 #include <linux/spinlock.h>
17 #include <linux/skbuff.h>
18
19 #ifdef CONFIG_RTL8366S_PHY_DEBUG_FS
20 #include <linux/debugfs.h>
21 #endif
22
23 #include "rtl8366_smi.h"
24
25 #define RTL8366_SMI_ACK_RETRY_COUNT 5
26 #define RTL8366_SMI_CLK_DELAY 10 /* nsec */
27
28 static inline void rtl8366_smi_clk_delay(struct rtl8366_smi *smi)
29 {
30 ndelay(RTL8366_SMI_CLK_DELAY);
31 }
32
33 static void rtl8366_smi_start(struct rtl8366_smi *smi)
34 {
35 unsigned int sda = smi->gpio_sda;
36 unsigned int sck = smi->gpio_sck;
37
38 /*
39 * Set GPIO pins to output mode, with initial state:
40 * SCK = 0, SDA = 1
41 */
42 gpio_direction_output(sck, 0);
43 gpio_direction_output(sda, 1);
44 rtl8366_smi_clk_delay(smi);
45
46 /* CLK 1: 0 -> 1, 1 -> 0 */
47 gpio_set_value(sck, 1);
48 rtl8366_smi_clk_delay(smi);
49 gpio_set_value(sck, 0);
50 rtl8366_smi_clk_delay(smi);
51
52 /* CLK 2: */
53 gpio_set_value(sck, 1);
54 rtl8366_smi_clk_delay(smi);
55 gpio_set_value(sda, 0);
56 rtl8366_smi_clk_delay(smi);
57 gpio_set_value(sck, 0);
58 rtl8366_smi_clk_delay(smi);
59 gpio_set_value(sda, 1);
60 }
61
62 static void rtl8366_smi_stop(struct rtl8366_smi *smi)
63 {
64 unsigned int sda = smi->gpio_sda;
65 unsigned int sck = smi->gpio_sck;
66
67 rtl8366_smi_clk_delay(smi);
68 gpio_set_value(sda, 0);
69 gpio_set_value(sck, 1);
70 rtl8366_smi_clk_delay(smi);
71 gpio_set_value(sda, 1);
72 rtl8366_smi_clk_delay(smi);
73 gpio_set_value(sck, 1);
74 rtl8366_smi_clk_delay(smi);
75 gpio_set_value(sck, 0);
76 rtl8366_smi_clk_delay(smi);
77 gpio_set_value(sck, 1);
78
79 /* add a click */
80 rtl8366_smi_clk_delay(smi);
81 gpio_set_value(sck, 0);
82 rtl8366_smi_clk_delay(smi);
83 gpio_set_value(sck, 1);
84
85 /* set GPIO pins to input mode */
86 gpio_direction_input(sda);
87 gpio_direction_input(sck);
88 }
89
90 static void rtl8366_smi_write_bits(struct rtl8366_smi *smi, u32 data, u32 len)
91 {
92 unsigned int sda = smi->gpio_sda;
93 unsigned int sck = smi->gpio_sck;
94
95 for (; len > 0; len--) {
96 rtl8366_smi_clk_delay(smi);
97
98 /* prepare data */
99 gpio_set_value(sda, !!(data & ( 1 << (len - 1))));
100 rtl8366_smi_clk_delay(smi);
101
102 /* clocking */
103 gpio_set_value(sck, 1);
104 rtl8366_smi_clk_delay(smi);
105 gpio_set_value(sck, 0);
106 }
107 }
108
109 static void rtl8366_smi_read_bits(struct rtl8366_smi *smi, u32 len, u32 *data)
110 {
111 unsigned int sda = smi->gpio_sda;
112 unsigned int sck = smi->gpio_sck;
113
114 gpio_direction_input(sda);
115
116 for (*data = 0; len > 0; len--) {
117 u32 u;
118
119 rtl8366_smi_clk_delay(smi);
120
121 /* clocking */
122 gpio_set_value(sck, 1);
123 rtl8366_smi_clk_delay(smi);
124 u = !!gpio_get_value(sda);
125 gpio_set_value(sck, 0);
126
127 *data |= (u << (len - 1));
128 }
129
130 gpio_direction_output(sda, 0);
131 }
132
133 static int rtl8366_smi_wait_for_ack(struct rtl8366_smi *smi)
134 {
135 int retry_cnt;
136
137 retry_cnt = 0;
138 do {
139 u32 ack;
140
141 rtl8366_smi_read_bits(smi, 1, &ack);
142 if (ack == 0)
143 break;
144
145 if (++retry_cnt > RTL8366_SMI_ACK_RETRY_COUNT)
146 return -EIO;
147 } while (1);
148
149 return 0;
150 }
151
152 static int rtl8366_smi_write_byte(struct rtl8366_smi *smi, u8 data)
153 {
154 rtl8366_smi_write_bits(smi, data, 8);
155 return rtl8366_smi_wait_for_ack(smi);
156 }
157
158 static int rtl8366_smi_read_byte0(struct rtl8366_smi *smi, u8 *data)
159 {
160 u32 t;
161
162 /* read data */
163 rtl8366_smi_read_bits(smi, 8, &t);
164 *data = (t & 0xff);
165
166 /* send an ACK */
167 rtl8366_smi_write_bits(smi, 0x00, 1);
168
169 return 0;
170 }
171
172 static int rtl8366_smi_read_byte1(struct rtl8366_smi *smi, u8 *data)
173 {
174 u32 t;
175
176 /* read data */
177 rtl8366_smi_read_bits(smi, 8, &t);
178 *data = (t & 0xff);
179
180 /* send an ACK */
181 rtl8366_smi_write_bits(smi, 0x01, 1);
182
183 return 0;
184 }
185
186 int rtl8366_smi_read_reg(struct rtl8366_smi *smi, u32 addr, u32 *data)
187 {
188 unsigned long flags;
189 u8 lo = 0;
190 u8 hi = 0;
191 int ret;
192
193 spin_lock_irqsave(&smi->lock, flags);
194
195 rtl8366_smi_start(smi);
196
197 /* send READ command */
198 ret = rtl8366_smi_write_byte(smi, 0x0a << 4 | 0x04 << 1 | 0x01);
199 if (ret)
200 goto out;
201
202 /* set ADDR[7:0] */
203 ret = rtl8366_smi_write_byte(smi, addr & 0xff);
204 if (ret)
205 goto out;
206
207 /* set ADDR[15:8] */
208 ret = rtl8366_smi_write_byte(smi, addr >> 8);
209 if (ret)
210 goto out;
211
212 /* read DATA[7:0] */
213 rtl8366_smi_read_byte0(smi, &lo);
214 /* read DATA[15:8] */
215 rtl8366_smi_read_byte1(smi, &hi);
216
217 *data = ((u32) lo) | (((u32) hi) << 8);
218
219 ret = 0;
220
221 out:
222 rtl8366_smi_stop(smi);
223 spin_unlock_irqrestore(&smi->lock, flags);
224
225 return ret;
226 }
227 EXPORT_SYMBOL_GPL(rtl8366_smi_read_reg);
228
229 int rtl8366_smi_write_reg(struct rtl8366_smi *smi, u32 addr, u32 data)
230 {
231 unsigned long flags;
232 int ret;
233
234 spin_lock_irqsave(&smi->lock, flags);
235
236 rtl8366_smi_start(smi);
237
238 /* send WRITE command */
239 ret = rtl8366_smi_write_byte(smi, 0x0a << 4 | 0x04 << 1 | 0x00);
240 if (ret)
241 goto out;
242
243 /* set ADDR[7:0] */
244 ret = rtl8366_smi_write_byte(smi, addr & 0xff);
245 if (ret)
246 goto out;
247
248 /* set ADDR[15:8] */
249 ret = rtl8366_smi_write_byte(smi, addr >> 8);
250 if (ret)
251 goto out;
252
253 /* write DATA[7:0] */
254 ret = rtl8366_smi_write_byte(smi, data & 0xff);
255 if (ret)
256 goto out;
257
258 /* write DATA[15:8] */
259 ret = rtl8366_smi_write_byte(smi, data >> 8);
260 if (ret)
261 goto out;
262
263 ret = 0;
264
265 out:
266 rtl8366_smi_stop(smi);
267 spin_unlock_irqrestore(&smi->lock, flags);
268
269 return ret;
270 }
271 EXPORT_SYMBOL_GPL(rtl8366_smi_write_reg);
272
273 int rtl8366_smi_rmwr(struct rtl8366_smi *smi, u32 addr, u32 mask, u32 data)
274 {
275 u32 t;
276 int err;
277
278 err = rtl8366_smi_read_reg(smi, addr, &t);
279 if (err)
280 return err;
281
282 err = rtl8366_smi_write_reg(smi, addr, (t & ~mask) | data);
283 return err;
284
285 }
286 EXPORT_SYMBOL_GPL(rtl8366_smi_rmwr);
287
288 static int rtl8366_mc_is_used(struct rtl8366_smi *smi, int mc_index, int *used)
289 {
290 int err;
291 int i;
292
293 *used = 0;
294 for (i = 0; i < smi->num_ports; i++) {
295 int index = 0;
296
297 err = smi->ops->get_mc_index(smi, i, &index);
298 if (err)
299 return err;
300
301 if (mc_index == index) {
302 *used = 1;
303 break;
304 }
305 }
306
307 return 0;
308 }
309
310 static int rtl8366_set_vlan(struct rtl8366_smi *smi, int vid, u32 member,
311 u32 untag, u32 fid)
312 {
313 struct rtl8366_vlan_4k vlan4k;
314 int err;
315 int i;
316
317 /* Update the 4K table */
318 err = smi->ops->get_vlan_4k(smi, vid, &vlan4k);
319 if (err)
320 return err;
321
322 vlan4k.member = member;
323 vlan4k.untag = untag;
324 vlan4k.fid = fid;
325 err = smi->ops->set_vlan_4k(smi, &vlan4k);
326 if (err)
327 return err;
328
329 /* Try to find an existing MC entry for this VID */
330 for (i = 0; i < smi->num_vlan_mc; i++) {
331 struct rtl8366_vlan_mc vlanmc;
332
333 err = smi->ops->get_vlan_mc(smi, i, &vlanmc);
334 if (err)
335 return err;
336
337 if (vid == vlanmc.vid) {
338 /* update the MC entry */
339 vlanmc.member = member;
340 vlanmc.untag = untag;
341 vlanmc.fid = fid;
342
343 err = smi->ops->set_vlan_mc(smi, i, &vlanmc);
344 break;
345 }
346 }
347
348 return err;
349 }
350
351 static int rtl8366_get_pvid(struct rtl8366_smi *smi, int port, int *val)
352 {
353 struct rtl8366_vlan_mc vlanmc;
354 int err;
355 int index;
356
357 err = smi->ops->get_mc_index(smi, port, &index);
358 if (err)
359 return err;
360
361 err = smi->ops->get_vlan_mc(smi, index, &vlanmc);
362 if (err)
363 return err;
364
365 *val = vlanmc.vid;
366 return 0;
367 }
368
369 static int rtl8366_set_pvid(struct rtl8366_smi *smi, unsigned port,
370 unsigned vid)
371 {
372 struct rtl8366_vlan_mc vlanmc;
373 struct rtl8366_vlan_4k vlan4k;
374 int err;
375 int i;
376
377 /* Try to find an existing MC entry for this VID */
378 for (i = 0; i < smi->num_vlan_mc; i++) {
379 err = smi->ops->get_vlan_mc(smi, i, &vlanmc);
380 if (err)
381 return err;
382
383 if (vid == vlanmc.vid) {
384 err = smi->ops->set_vlan_mc(smi, i, &vlanmc);
385 if (err)
386 return err;
387
388 err = smi->ops->set_mc_index(smi, port, i);
389 return err;
390 }
391 }
392
393 /* We have no MC entry for this VID, try to find an empty one */
394 for (i = 0; i < smi->num_vlan_mc; i++) {
395 err = smi->ops->get_vlan_mc(smi, i, &vlanmc);
396 if (err)
397 return err;
398
399 if (vlanmc.vid == 0 && vlanmc.member == 0) {
400 /* Update the entry from the 4K table */
401 err = smi->ops->get_vlan_4k(smi, vid, &vlan4k);
402 if (err)
403 return err;
404
405 vlanmc.vid = vid;
406 vlanmc.member = vlan4k.member;
407 vlanmc.untag = vlan4k.untag;
408 vlanmc.fid = vlan4k.fid;
409 err = smi->ops->set_vlan_mc(smi, i, &vlanmc);
410 if (err)
411 return err;
412
413 err = smi->ops->set_mc_index(smi, port, i);
414 return err;
415 }
416 }
417
418 /* MC table is full, try to find an unused entry and replace it */
419 for (i = 0; i < smi->num_vlan_mc; i++) {
420 int used;
421
422 err = rtl8366_mc_is_used(smi, i, &used);
423 if (err)
424 return err;
425
426 if (!used) {
427 /* Update the entry from the 4K table */
428 err = smi->ops->get_vlan_4k(smi, vid, &vlan4k);
429 if (err)
430 return err;
431
432 vlanmc.vid = vid;
433 vlanmc.member = vlan4k.member;
434 vlanmc.untag = vlan4k.untag;
435 vlanmc.fid = vlan4k.fid;
436 err = smi->ops->set_vlan_mc(smi, i, &vlanmc);
437 if (err)
438 return err;
439
440 err = smi->ops->set_mc_index(smi, port, i);
441 return err;
442 }
443 }
444
445 dev_err(smi->parent,
446 "all VLAN member configurations are in use\n");
447
448 return -ENOSPC;
449 }
450
451 static int rtl8366_enable_vlan(struct rtl8366_smi *smi, int enable)
452 {
453 int err;
454
455 err = smi->ops->enable_vlan(smi, enable);
456 if (err)
457 return err;
458
459 smi->vlan_enabled = enable;
460
461 if (!enable) {
462 smi->vlan4k_enabled = 0;
463 err = smi->ops->enable_vlan4k(smi, enable);
464 }
465
466 return err;
467 }
468
469 static int rtl8366_enable_vlan4k(struct rtl8366_smi *smi, int enable)
470 {
471 int err;
472
473 if (enable) {
474 err = smi->ops->enable_vlan(smi, enable);
475 if (err)
476 return err;
477
478 smi->vlan_enabled = enable;
479 }
480
481 err = smi->ops->enable_vlan4k(smi, enable);
482 if (err)
483 return err;
484
485 smi->vlan4k_enabled = enable;
486 return 0;
487 }
488
489 int rtl8366_reset_vlan(struct rtl8366_smi *smi)
490 {
491 struct rtl8366_vlan_mc vlanmc;
492 int err;
493 int i;
494
495 rtl8366_enable_vlan(smi, 0);
496 rtl8366_enable_vlan4k(smi, 0);
497
498 /* clear VLAN member configurations */
499 vlanmc.vid = 0;
500 vlanmc.priority = 0;
501 vlanmc.member = 0;
502 vlanmc.untag = 0;
503 vlanmc.fid = 0;
504 for (i = 0; i < smi->num_vlan_mc; i++) {
505 err = smi->ops->set_vlan_mc(smi, i, &vlanmc);
506 if (err)
507 return err;
508 }
509
510 return 0;
511 }
512 EXPORT_SYMBOL_GPL(rtl8366_reset_vlan);
513
514 static int rtl8366_init_vlan(struct rtl8366_smi *smi)
515 {
516 int port;
517 int err;
518
519 err = rtl8366_reset_vlan(smi);
520 if (err)
521 return err;
522
523 for (port = 0; port < smi->num_ports; port++) {
524 u32 mask;
525
526 if (port == smi->cpu_port)
527 mask = (1 << smi->num_ports) - 1;
528 else
529 mask = (1 << port) | (1 << smi->cpu_port);
530
531 err = rtl8366_set_vlan(smi, (port + 1), mask, mask, 0);
532 if (err)
533 return err;
534
535 err = rtl8366_set_pvid(smi, port, (port + 1));
536 if (err)
537 return err;
538 }
539
540 return rtl8366_enable_vlan(smi, 1);
541 }
542
543 #ifdef CONFIG_RTL8366S_PHY_DEBUG_FS
544 int rtl8366_debugfs_open(struct inode *inode, struct file *file)
545 {
546 file->private_data = inode->i_private;
547 return 0;
548 }
549 EXPORT_SYMBOL_GPL(rtl8366_debugfs_open);
550
551 static ssize_t rtl8366_read_debugfs_vlan_mc(struct file *file,
552 char __user *user_buf,
553 size_t count, loff_t *ppos)
554 {
555 struct rtl8366_smi *smi = (struct rtl8366_smi *)file->private_data;
556 int i, len = 0;
557 char *buf = smi->buf;
558
559 len += snprintf(buf + len, sizeof(smi->buf) - len,
560 "%2s %6s %4s %6s %6s %3s\n",
561 "id", "vid","prio", "member", "untag", "fid");
562
563 for (i = 0; i < smi->num_vlan_mc; ++i) {
564 struct rtl8366_vlan_mc vlanmc;
565
566 smi->ops->get_vlan_mc(smi, i, &vlanmc);
567
568 len += snprintf(buf + len, sizeof(smi->buf) - len,
569 "%2d %6d %4d 0x%04x 0x%04x %3d\n",
570 i, vlanmc.vid, vlanmc.priority,
571 vlanmc.member, vlanmc.untag, vlanmc.fid);
572 }
573
574 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
575 }
576
577 #define RTL8366_VLAN4K_PAGE_SIZE 64
578 #define RTL8366_VLAN4K_NUM_PAGES (4096 / RTL8366_VLAN4K_PAGE_SIZE)
579
580 static ssize_t rtl8366_read_debugfs_vlan_4k(struct file *file,
581 char __user *user_buf,
582 size_t count, loff_t *ppos)
583 {
584 struct rtl8366_smi *smi = (struct rtl8366_smi *)file->private_data;
585 int i, len = 0;
586 int offset;
587 char *buf = smi->buf;
588
589 if (smi->dbg_vlan_4k_page >= RTL8366_VLAN4K_NUM_PAGES) {
590 len += snprintf(buf + len, sizeof(smi->buf) - len,
591 "invalid page: %u\n", smi->dbg_vlan_4k_page);
592 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
593 }
594
595 len += snprintf(buf + len, sizeof(smi->buf) - len,
596 "%4s %6s %6s %3s\n",
597 "vid", "member", "untag", "fid");
598
599 offset = RTL8366_VLAN4K_PAGE_SIZE * smi->dbg_vlan_4k_page;
600 for (i = 0; i < RTL8366_VLAN4K_PAGE_SIZE; i++) {
601 struct rtl8366_vlan_4k vlan4k;
602
603 smi->ops->get_vlan_4k(smi, offset + i, &vlan4k);
604
605 len += snprintf(buf + len, sizeof(smi->buf) - len,
606 "%4d 0x%04x 0x%04x %3d\n",
607 vlan4k.vid, vlan4k.member,
608 vlan4k.untag, vlan4k.fid);
609 }
610
611 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
612 }
613
614 static ssize_t rtl8366_read_debugfs_pvid(struct file *file,
615 char __user *user_buf,
616 size_t count, loff_t *ppos)
617 {
618 struct rtl8366_smi *smi = (struct rtl8366_smi *)file->private_data;
619 char *buf = smi->buf;
620 int len = 0;
621 int i;
622
623 len += snprintf(buf + len, sizeof(smi->buf) - len, "%4s %4s\n",
624 "port", "pvid");
625
626 for (i = 0; i < smi->num_ports; i++) {
627 int pvid;
628 int err;
629
630 err = rtl8366_get_pvid(smi, i, &pvid);
631 if (err)
632 len += snprintf(buf + len, sizeof(smi->buf) - len,
633 "%4d error\n", i);
634 else
635 len += snprintf(buf + len, sizeof(smi->buf) - len,
636 "%4d %4d\n", i, pvid);
637 }
638
639 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
640 }
641
642 static ssize_t rtl8366_read_debugfs_reg(struct file *file,
643 char __user *user_buf,
644 size_t count, loff_t *ppos)
645 {
646 struct rtl8366_smi *smi = (struct rtl8366_smi *)file->private_data;
647 u32 t, reg = smi->dbg_reg;
648 int err, len = 0;
649 char *buf = smi->buf;
650
651 memset(buf, '\0', sizeof(smi->buf));
652
653 err = rtl8366_smi_read_reg(smi, reg, &t);
654 if (err) {
655 len += snprintf(buf, sizeof(smi->buf),
656 "Read failed (reg: 0x%04x)\n", reg);
657 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
658 }
659
660 len += snprintf(buf, sizeof(smi->buf), "reg = 0x%04x, val = 0x%04x\n",
661 reg, t);
662
663 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
664 }
665
666 static ssize_t rtl8366_write_debugfs_reg(struct file *file,
667 const char __user *user_buf,
668 size_t count, loff_t *ppos)
669 {
670 struct rtl8366_smi *smi = (struct rtl8366_smi *)file->private_data;
671 unsigned long data;
672 u32 reg = smi->dbg_reg;
673 int err;
674 size_t len;
675 char *buf = smi->buf;
676
677 len = min(count, sizeof(smi->buf) - 1);
678 if (copy_from_user(buf, user_buf, len)) {
679 dev_err(smi->parent, "copy from user failed\n");
680 return -EFAULT;
681 }
682
683 buf[len] = '\0';
684 if (len > 0 && buf[len - 1] == '\n')
685 buf[len - 1] = '\0';
686
687
688 if (strict_strtoul(buf, 16, &data)) {
689 dev_err(smi->parent, "Invalid reg value %s\n", buf);
690 } else {
691 err = rtl8366_smi_write_reg(smi, reg, data);
692 if (err) {
693 dev_err(smi->parent,
694 "writing reg 0x%04x val 0x%04lx failed\n",
695 reg, data);
696 }
697 }
698
699 return count;
700 }
701
702 static ssize_t rtl8366_read_debugfs_mibs(struct file *file,
703 char __user *user_buf,
704 size_t count, loff_t *ppos)
705 {
706 struct rtl8366_smi *smi = file->private_data;
707 int i, j, len = 0;
708 char *buf = smi->buf;
709
710 len += snprintf(buf + len, sizeof(smi->buf) - len, "%-36s",
711 "Counter");
712
713 for (i = 0; i < smi->num_ports; i++) {
714 char port_buf[10];
715
716 snprintf(port_buf, sizeof(port_buf), "Port %d", i);
717 len += snprintf(buf + len, sizeof(smi->buf) - len, " %12s",
718 port_buf);
719 }
720 len += snprintf(buf + len, sizeof(smi->buf) - len, "\n");
721
722 for (i = 0; i < smi->num_mib_counters; i++) {
723 len += snprintf(buf + len, sizeof(smi->buf) - len, "%-36s ",
724 smi->mib_counters[i].name);
725 for (j = 0; j < smi->num_ports; j++) {
726 unsigned long long counter = 0;
727
728 if (!smi->ops->get_mib_counter(smi, i, j, &counter))
729 len += snprintf(buf + len,
730 sizeof(smi->buf) - len,
731 "%12llu ", counter);
732 else
733 len += snprintf(buf + len,
734 sizeof(smi->buf) - len,
735 "%12s ", "error");
736 }
737 len += snprintf(buf + len, sizeof(smi->buf) - len, "\n");
738 }
739
740 return simple_read_from_buffer(user_buf, count, ppos, buf, len);
741 }
742
743 static const struct file_operations fops_rtl8366_regs = {
744 .read = rtl8366_read_debugfs_reg,
745 .write = rtl8366_write_debugfs_reg,
746 .open = rtl8366_debugfs_open,
747 .owner = THIS_MODULE
748 };
749
750 static const struct file_operations fops_rtl8366_vlan_mc = {
751 .read = rtl8366_read_debugfs_vlan_mc,
752 .open = rtl8366_debugfs_open,
753 .owner = THIS_MODULE
754 };
755
756 static const struct file_operations fops_rtl8366_vlan_4k = {
757 .read = rtl8366_read_debugfs_vlan_4k,
758 .open = rtl8366_debugfs_open,
759 .owner = THIS_MODULE
760 };
761
762 static const struct file_operations fops_rtl8366_pvid = {
763 .read = rtl8366_read_debugfs_pvid,
764 .open = rtl8366_debugfs_open,
765 .owner = THIS_MODULE
766 };
767
768 static const struct file_operations fops_rtl8366_mibs = {
769 .read = rtl8366_read_debugfs_mibs,
770 .open = rtl8366_debugfs_open,
771 .owner = THIS_MODULE
772 };
773
774 static void rtl8366_debugfs_init(struct rtl8366_smi *smi)
775 {
776 struct dentry *node;
777 struct dentry *root;
778
779 if (!smi->debugfs_root)
780 smi->debugfs_root = debugfs_create_dir(dev_name(smi->parent),
781 NULL);
782
783 if (!smi->debugfs_root) {
784 dev_err(smi->parent, "Unable to create debugfs dir\n");
785 return;
786 }
787 root = smi->debugfs_root;
788
789 node = debugfs_create_x16("reg", S_IRUGO | S_IWUSR, root,
790 &smi->dbg_reg);
791 if (!node) {
792 dev_err(smi->parent, "Creating debugfs file '%s' failed\n",
793 "reg");
794 return;
795 }
796
797 node = debugfs_create_file("val", S_IRUGO | S_IWUSR, root, smi,
798 &fops_rtl8366_regs);
799 if (!node) {
800 dev_err(smi->parent, "Creating debugfs file '%s' failed\n",
801 "val");
802 return;
803 }
804
805 node = debugfs_create_file("vlan_mc", S_IRUSR, root, smi,
806 &fops_rtl8366_vlan_mc);
807 if (!node) {
808 dev_err(smi->parent, "Creating debugfs file '%s' failed\n",
809 "vlan_mc");
810 return;
811 }
812
813 node = debugfs_create_u8("vlan_4k_page", S_IRUGO | S_IWUSR, root,
814 &smi->dbg_vlan_4k_page);
815 if (!node) {
816 dev_err(smi->parent, "Creating debugfs file '%s' failed\n",
817 "vlan_4k_page");
818 return;
819 }
820
821 node = debugfs_create_file("vlan_4k", S_IRUSR, root, smi,
822 &fops_rtl8366_vlan_4k);
823 if (!node) {
824 dev_err(smi->parent, "Creating debugfs file '%s' failed\n",
825 "vlan_4k");
826 return;
827 }
828
829 node = debugfs_create_file("pvid", S_IRUSR, root, smi,
830 &fops_rtl8366_pvid);
831 if (!node) {
832 dev_err(smi->parent, "Creating debugfs file '%s' failed\n",
833 "pvid");
834 return;
835 }
836
837 node = debugfs_create_file("mibs", S_IRUSR, smi->debugfs_root, smi,
838 &fops_rtl8366_mibs);
839 if (!node)
840 dev_err(smi->parent, "Creating debugfs file '%s' failed\n",
841 "mibs");
842 }
843
844 static void rtl8366_debugfs_remove(struct rtl8366_smi *smi)
845 {
846 if (smi->debugfs_root) {
847 debugfs_remove_recursive(smi->debugfs_root);
848 smi->debugfs_root = NULL;
849 }
850 }
851 #else
852 static inline void rtl8366_debugfs_init(struct rtl8366_smi *smi) {}
853 static inline void rtl8366_debugfs_remove(struct rtl8366_smi *smi) {}
854 #endif /* CONFIG_RTL8366S_PHY_DEBUG_FS */
855
856 static int rtl8366_smi_mii_init(struct rtl8366_smi *smi)
857 {
858 int ret;
859 int i;
860
861 smi->mii_bus = mdiobus_alloc();
862 if (smi->mii_bus == NULL) {
863 ret = -ENOMEM;
864 goto err;
865 }
866
867 smi->mii_bus->priv = (void *) smi;
868 smi->mii_bus->name = dev_name(smi->parent);
869 smi->mii_bus->read = smi->ops->mii_read;
870 smi->mii_bus->write = smi->ops->mii_write;
871 snprintf(smi->mii_bus->id, MII_BUS_ID_SIZE, "%s",
872 dev_name(smi->parent));
873 smi->mii_bus->parent = smi->parent;
874 smi->mii_bus->phy_mask = ~(0x1f);
875 smi->mii_bus->irq = smi->mii_irq;
876 for (i = 0; i < PHY_MAX_ADDR; i++)
877 smi->mii_irq[i] = PHY_POLL;
878
879 ret = mdiobus_register(smi->mii_bus);
880 if (ret)
881 goto err_free;
882
883 return 0;
884
885 err_free:
886 mdiobus_free(smi->mii_bus);
887 err:
888 return ret;
889 }
890
891 static void rtl8366_smi_mii_cleanup(struct rtl8366_smi *smi)
892 {
893 mdiobus_unregister(smi->mii_bus);
894 mdiobus_free(smi->mii_bus);
895 }
896
897 int rtl8366_sw_get_port_pvid(struct switch_dev *dev, int port, int *val)
898 {
899 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
900 return rtl8366_get_pvid(smi, port, val);
901 }
902 EXPORT_SYMBOL_GPL(rtl8366_sw_get_port_pvid);
903
904 int rtl8366_sw_set_port_pvid(struct switch_dev *dev, int port, int val)
905 {
906 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
907 return rtl8366_set_pvid(smi, port, val);
908 }
909 EXPORT_SYMBOL_GPL(rtl8366_sw_set_port_pvid);
910
911 int rtl8366_sw_get_port_mib(struct switch_dev *dev,
912 const struct switch_attr *attr,
913 struct switch_val *val)
914 {
915 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
916 int i, len = 0;
917 unsigned long long counter = 0;
918 char *buf = smi->buf;
919
920 if (val->port_vlan >= smi->num_ports)
921 return -EINVAL;
922
923 len += snprintf(buf + len, sizeof(smi->buf) - len,
924 "Port %d MIB counters\n",
925 val->port_vlan);
926
927 for (i = 0; i < smi->num_mib_counters; ++i) {
928 len += snprintf(buf + len, sizeof(smi->buf) - len,
929 "%-36s: ", smi->mib_counters[i].name);
930 if (!smi->ops->get_mib_counter(smi, i, val->port_vlan,
931 &counter))
932 len += snprintf(buf + len, sizeof(smi->buf) - len,
933 "%llu\n", counter);
934 else
935 len += snprintf(buf + len, sizeof(smi->buf) - len,
936 "%s\n", "error");
937 }
938
939 val->value.s = buf;
940 val->len = len;
941 return 0;
942 }
943 EXPORT_SYMBOL_GPL(rtl8366_sw_get_port_mib);
944
945 int rtl8366_sw_get_vlan_info(struct switch_dev *dev,
946 const struct switch_attr *attr,
947 struct switch_val *val)
948 {
949 int i;
950 u32 len = 0;
951 struct rtl8366_vlan_4k vlan4k;
952 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
953 char *buf = smi->buf;
954 int err;
955
956 if (!smi->ops->is_vlan_valid(smi, val->port_vlan))
957 return -EINVAL;
958
959 memset(buf, '\0', sizeof(smi->buf));
960
961 err = smi->ops->get_vlan_4k(smi, val->port_vlan, &vlan4k);
962 if (err)
963 return err;
964
965 len += snprintf(buf + len, sizeof(smi->buf) - len,
966 "VLAN %d: Ports: '", vlan4k.vid);
967
968 for (i = 0; i < smi->num_ports; i++) {
969 if (!(vlan4k.member & (1 << i)))
970 continue;
971
972 len += snprintf(buf + len, sizeof(smi->buf) - len, "%d%s", i,
973 (vlan4k.untag & (1 << i)) ? "" : "t");
974 }
975
976 len += snprintf(buf + len, sizeof(smi->buf) - len,
977 "', members=%04x, untag=%04x, fid=%u",
978 vlan4k.member, vlan4k.untag, vlan4k.fid);
979
980 val->value.s = buf;
981 val->len = len;
982
983 return 0;
984 }
985 EXPORT_SYMBOL_GPL(rtl8366_sw_get_vlan_info);
986
987 int rtl8366_sw_get_vlan_ports(struct switch_dev *dev, struct switch_val *val)
988 {
989 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
990 struct switch_port *port;
991 struct rtl8366_vlan_4k vlan4k;
992 int i;
993
994 if (!smi->ops->is_vlan_valid(smi, val->port_vlan))
995 return -EINVAL;
996
997 smi->ops->get_vlan_4k(smi, val->port_vlan, &vlan4k);
998
999 port = &val->value.ports[0];
1000 val->len = 0;
1001 for (i = 0; i < smi->num_ports; i++) {
1002 if (!(vlan4k.member & BIT(i)))
1003 continue;
1004
1005 port->id = i;
1006 port->flags = (vlan4k.untag & BIT(i)) ?
1007 0 : BIT(SWITCH_PORT_FLAG_TAGGED);
1008 val->len++;
1009 port++;
1010 }
1011 return 0;
1012 }
1013 EXPORT_SYMBOL_GPL(rtl8366_sw_get_vlan_ports);
1014
1015 int rtl8366_sw_set_vlan_ports(struct switch_dev *dev, struct switch_val *val)
1016 {
1017 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
1018 struct switch_port *port;
1019 u32 member = 0;
1020 u32 untag = 0;
1021 int err;
1022 int i;
1023
1024 if (!smi->ops->is_vlan_valid(smi, val->port_vlan))
1025 return -EINVAL;
1026
1027 port = &val->value.ports[0];
1028 for (i = 0; i < val->len; i++, port++) {
1029 member |= BIT(port->id);
1030
1031 if (!(port->flags & BIT(SWITCH_PORT_FLAG_TAGGED)))
1032 untag |= BIT(port->id);
1033
1034 /*
1035 * To ensure that we have a valid MC entry for this VLAN,
1036 * initialize the port VLAN ID here.
1037 */
1038 err = rtl8366_set_pvid(smi, port->id, val->port_vlan);
1039 if (err < 0)
1040 return err;
1041 }
1042
1043 return rtl8366_set_vlan(smi, val->port_vlan, member, untag, 0);
1044 }
1045 EXPORT_SYMBOL_GPL(rtl8366_sw_set_vlan_ports);
1046
1047 int rtl8366_sw_get_vlan_fid(struct switch_dev *dev,
1048 const struct switch_attr *attr,
1049 struct switch_val *val)
1050 {
1051 struct rtl8366_vlan_4k vlan4k;
1052 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
1053 int err;
1054
1055 if (!smi->ops->is_vlan_valid(smi, val->port_vlan))
1056 return -EINVAL;
1057
1058 err = smi->ops->get_vlan_4k(smi, val->port_vlan, &vlan4k);
1059 if (err)
1060 return err;
1061
1062 val->value.i = vlan4k.fid;
1063
1064 return 0;
1065 }
1066 EXPORT_SYMBOL_GPL(rtl8366_sw_get_vlan_fid);
1067
1068 int rtl8366_sw_set_vlan_fid(struct switch_dev *dev,
1069 const struct switch_attr *attr,
1070 struct switch_val *val)
1071 {
1072 struct rtl8366_vlan_4k vlan4k;
1073 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
1074 int err;
1075
1076 if (!smi->ops->is_vlan_valid(smi, val->port_vlan))
1077 return -EINVAL;
1078
1079 if (val->value.i < 0 || val->value.i > attr->max)
1080 return -EINVAL;
1081
1082 err = smi->ops->get_vlan_4k(smi, val->port_vlan, &vlan4k);
1083 if (err)
1084 return err;
1085
1086 return rtl8366_set_vlan(smi, val->port_vlan,
1087 vlan4k.member,
1088 vlan4k.untag,
1089 val->value.i);
1090 }
1091 EXPORT_SYMBOL_GPL(rtl8366_sw_set_vlan_fid);
1092
1093 int rtl8366_sw_get_vlan_enable(struct switch_dev *dev,
1094 const struct switch_attr *attr,
1095 struct switch_val *val)
1096 {
1097 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
1098
1099 if (attr->ofs > 2)
1100 return -EINVAL;
1101
1102 if (attr->ofs == 1)
1103 val->value.i = smi->vlan_enabled;
1104 else
1105 val->value.i = smi->vlan4k_enabled;
1106
1107 return 0;
1108 }
1109 EXPORT_SYMBOL_GPL(rtl8366_sw_get_vlan_enable);
1110
1111 int rtl8366_sw_set_vlan_enable(struct switch_dev *dev,
1112 const struct switch_attr *attr,
1113 struct switch_val *val)
1114 {
1115 struct rtl8366_smi *smi = sw_to_rtl8366_smi(dev);
1116 int err;
1117
1118 if (attr->ofs > 2)
1119 return -EINVAL;
1120
1121 if (attr->ofs == 1)
1122 err = rtl8366_enable_vlan(smi, val->value.i);
1123 else
1124 err = rtl8366_enable_vlan4k(smi, val->value.i);
1125
1126 return err;
1127 }
1128 EXPORT_SYMBOL_GPL(rtl8366_sw_set_vlan_enable);
1129
1130 struct rtl8366_smi *rtl8366_smi_alloc(struct device *parent)
1131 {
1132 struct rtl8366_smi *smi;
1133
1134 BUG_ON(!parent);
1135
1136 smi = kzalloc(sizeof(*smi), GFP_KERNEL);
1137 if (!smi) {
1138 dev_err(parent, "no memory for private data\n");
1139 return NULL;
1140 }
1141
1142 smi->parent = parent;
1143 return smi;
1144 }
1145 EXPORT_SYMBOL_GPL(rtl8366_smi_alloc);
1146
1147 int rtl8366_smi_init(struct rtl8366_smi *smi)
1148 {
1149 int err;
1150
1151 if (!smi->ops)
1152 return -EINVAL;
1153
1154 err = gpio_request(smi->gpio_sda, dev_name(smi->parent));
1155 if (err) {
1156 dev_err(smi->parent, "gpio_request failed for %u, err=%d\n",
1157 smi->gpio_sda, err);
1158 goto err_out;
1159 }
1160
1161 err = gpio_request(smi->gpio_sck, dev_name(smi->parent));
1162 if (err) {
1163 dev_err(smi->parent, "gpio_request failed for %u, err=%d\n",
1164 smi->gpio_sck, err);
1165 goto err_free_sda;
1166 }
1167
1168 spin_lock_init(&smi->lock);
1169
1170 dev_info(smi->parent, "using GPIO pins %u (SDA) and %u (SCK)\n",
1171 smi->gpio_sda, smi->gpio_sck);
1172
1173 err = smi->ops->detect(smi);
1174 if (err) {
1175 dev_err(smi->parent, "chip detection failed, err=%d\n", err);
1176 goto err_free_sck;
1177 }
1178
1179 err = smi->ops->setup(smi);
1180 if (err) {
1181 dev_err(smi->parent, "chip setup failed, err=%d\n", err);
1182 goto err_free_sck;
1183 }
1184
1185 err = rtl8366_init_vlan(smi);
1186 if (err) {
1187 dev_err(smi->parent, "VLAN initialization failed, err=%d\n",
1188 err);
1189 goto err_disable_hw;
1190 }
1191
1192 err = rtl8366_smi_mii_init(smi);
1193 if (err)
1194 goto err_free_sck;
1195
1196 rtl8366_debugfs_init(smi);
1197
1198 return 0;
1199
1200 err_free_sck:
1201 gpio_free(smi->gpio_sck);
1202 err_free_sda:
1203 gpio_free(smi->gpio_sda);
1204 err_out:
1205 return err;
1206 }
1207 EXPORT_SYMBOL_GPL(rtl8366_smi_init);
1208
1209 void rtl8366_smi_cleanup(struct rtl8366_smi *smi)
1210 {
1211 rtl8366_debugfs_remove(smi);
1212 rtl8366_smi_mii_cleanup(smi);
1213 gpio_free(smi->gpio_sck);
1214 gpio_free(smi->gpio_sda);
1215 }
1216 EXPORT_SYMBOL_GPL(rtl8366_smi_cleanup);
1217
1218 MODULE_DESCRIPTION("Realtek RTL8366 SMI interface driver");
1219 MODULE_AUTHOR("Gabor Juhos <juhosg@openwrt.org>");
1220 MODULE_LICENSE("GPL v2");
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